I know there are 10 million ideas on what to do with an old window out there on the internet, well, here's idea 10,000,001.
You take 1 old window.....
Add 2 pieces of a torn apart screen door guard (I'm sure that's not the technical name, hopefully, you know what I'm talking about).....
Give them a fresh coat of paint, hang them on the wall, and this is what you get.....
I decided to hang a wreath that I had made in the middle, because it just needed something else to complete it. Pretty simple, not a ton of effort but looks great!